<?php

//  ORIGINAL CODE FROM:
//  Justin Vincent (justin@visunet.ie)
//    http://php.justinvincent.com

define('OBJECT', 'OBJECT', true);
define('ARRAY_A', 'ARRAY_A', false);
define('ARRAY_N', 'ARRAY_N', false);

if (!defined('SAVEQUERIES'))
    define('SAVEQUERIES', false);

class aldb {

    var $show_errors = false;
    var $num_queries = 0;
    var $last_query;
    var $col_info;
    var $queries;
    var $ready = false;

    // Our tables
    var $posts;
    var $users;
    var $post2cat;
    var $comments;
    var $links;
    var $options;
    var $optiontypes;
    var $optionvalues;
    var $optiongroups;
    var $optiongroup_options;
    var $postmeta;
    var $usermeta;
    var $terms;
    var $term_taxonomy;
    var $term_relationships;

    var $charset;
    var $collate;

    /**
     * Connects to the database server and selects a database
     * @param string $dbuser
     * @param string $dbpassword
     * @param string $dbname
     * @param string $dbhost
     */
    function aldb($dbuser, $dbpassword, $dbname, $dbhost) {
        return $this->__construct($dbuser, $dbpassword, $dbname, $dbhost);
    }

    function __construct($dbuser, $dbpassword, $dbname, $dbhost) {
        register_shutdown_function(array(&$this, "__destruct"));

        if ( defined('WP_DEBUG') and WP_DEBUG == true )
            $this->show_errors();

        if ( defined('DB_CHARSET') )
            $this->charset = DB_CHARSET;

        if ( defined('DB_COLLATE') )
            $this->collate = DB_COLLATE;

        $this->dbh = @mysql_connect($dbhost, $dbuser, $dbpassword);
        if (!$this->dbh) {
            die("
<h1>Error establishing a database connection</h1>
<p>This either means that the username and password information in your <code>/www/database/database.php</code> file is incorrect or we can't contact the database server at <code>$dbhost</code>. This could mean your host's database server is down.</p>
<ul>
    <li>Are you sure you have the correct username and password?</li>
    <li>Are you sure that you have typed the correct hostname?</li>
    <li>Are you sure that the database server is running?</li>
</ul>
<p>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='http://www.arlicle.com'>Arlicle Support Forums</a>.</p>
");
            return;
        }

        $this->ready = true;

        if ( !empty($this->charset) && version_compare(mysql_get_server_info(), '4.1.0', '>=') )
             $this->query("SET NAMES '$this->charset'");

        $this->select($dbname);
    }

    function __destruct() {
        return true;
    }

    /**
     * Selects a database using the current class's $this->dbh
     * @param string $db name
     */
    function select($db) {
        if (!mysql_select_db($db, $this->dbh)) {
            $this->ready = false;
            die("
<h1>Can&#8217;t select database</h1>
<p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>$db</code> database.</p>
<ul>
<li>Are you sure it exists?</li>
<li>Does the user <code>".DB_USER."</code> have permission to use the <code>$db</code> database?</li>
<li>On some systems the name of your database is prefixed with your username, so it would be like username. Could that be the problem?</li>
</ul>
<p>If you don't know how to setup a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href='http://www.arlicle.com'>Arlicle Support Forums</a>.</p>");
            return;
        }
    }

    /**
     * Escapes content for insertion into the database, for security
     *
     * @param string $string
     * @return string query safe string
     */
    function escape($string) {
        return addslashes( $string ); // Disable rest for now, causing problems
        if( !$this->dbh || version_compare( phpversion(), '4.3.0' ) == '-1' )
            return mysql_escape_string( $string );
        else
            return mysql_real_escape_string( $string, $this->dbh );
    }

    /**
     * Escapes content by reference for insertion into the database, for security
     * @param string $s
     */
    function escape_by_ref(&$s) {
        $s = $this->escape($s);
    }

    /**
     * Prepares a SQL query for safe use, using sprintf() syntax
     */
    function prepare($args=NULL) {
        if ( NULL === $args )
            return;
        $args = func_get_args();
        $query = array_shift($args);
        $query = str_replace("'%s'", '%s', $query); // in case someone mistakenly already singlequoted it
        $query = str_replace('"%s"', '%s', $query); // doublequote unquoting
        $query = str_replace('%s', "'%s'", $query); // quote the strings
        array_walk($args, array(&$this, 'escape_by_ref'));
        return @vsprintf($query, $args);
    }

    // ==================================================================
    //    Print SQL/DB error.

    function print_error($str = '') {
        global $EZSQL_ERROR;
        if (!$str) $str = mysql_error($this->dbh);
        $EZSQL_ERROR[] =
        array ('query' => $this->last_query, 'error_str' => $str);

        $error_str = "Arlicle database error $str for query $this->last_query";
        error_log($error_str, 0);

        // Is error output turned on or not..
        if ( !$this->show_errors )
            return false;

        $str = htmlspecialchars($str, ENT_QUOTES);
        $query = htmlspecialchars($this->last_query, ENT_QUOTES);

        // If there is an error then take note of it
        print "<div id='error'>
        <p class='wpdberror'><strong>Arlicle database error:</strong> [$str]<br />
        <code>$query</code></p>
        </div>";
    }

    // ==================================================================
    //    Turn error handling on or off..

    function show_errors( $show = true ) {
        $errors = $this->show_errors;
        $this->show_errors = $show;
        return $errors;
    }

    function hide_errors() {
        $show = $this->show_errors;
        $this->show_errors = false;
        return $show;
    }

    // ==================================================================
    //    Kill cached query results

    function flush() {
        $this->last_result = array();
        $this->col_info = null;
        $this->last_query = null;
    }

    // ==================================================================
    //    Basic Query    - see docs for more detail

    function query($query) {
        if ( ! $this->ready )
            return false;

        // filter the query, if filters are available
        // NOTE: some queries are made before the plugins have been loaded, and thus cannot be filtered with this method
        if ( function_exists('apply_filters') )
            $query = apply_filters('query', $query);

        // initialise return
        $return_val = 0;
        $this->flush();

        // Log how the function was called
        $this->func_call = "\$db->query(\"$query\")";

        // Keep track of the last query for debug..
        $this->last_query = $query;

        // Perform the query via std mysql_query function..
        if (SAVEQUERIES)
            $this->timer_start();

        $this->result = @mysql_query($query, $this->dbh);
        ++$this->num_queries;

        if (SAVEQUERIES)
            $this->queries[] = array( $query, $this->timer_stop() );

        // If there is an error then take note of it..
        if ( mysql_error($this->dbh) ) {
            $this->print_error();
            return false;
        }

        if ( preg_match("/^\\s*(insert|delete|update|replace) /i",$query) ) {
            $this->rows_affected = mysql_affected_rows($this->dbh);
            // Take note of the insert_id
            if ( preg_match("/^\\s*(insert|replace) /i",$query) ) {
                $this->insert_id = mysql_insert_id($this->dbh);
            }
            // Return number of rows affected
            $return_val = $this->rows_affected;
        } else {
            $i = 0;
            while ($i < @mysql_num_fields($this->result)) {
                $this->col_info[$i] = @mysql_fetch_field($this->result);
                $i++;
            }
            $num_rows = 0;
            while ( $row = @mysql_fetch_object($this->result) ) {
                $this->last_result[$num_rows] = $row;
                $num_rows++;
            }

            @mysql_free_result($this->result);

            // Log number of rows the query returned
            $this->num_rows = $num_rows;

            // Return number of rows selected
            $return_val = $this->num_rows;
        }

        return $return_val;
    }

    /**
     * Get one variable from the database
     * @param string $query (can be null as well, for caching, see codex)
     * @param int $x = 0 row num to return
     * @param int $y = 0 col num to return
     * @return mixed results
     */
    function get_var($query=null, $x = 0, $y = 0) {
        $this->func_call = "\$db->get_var(\"$query\",$x,$y)";
        if ( $query )
            $this->query($query);

        // Extract var out of cached results based x,y vals
        if ( !empty($this->last_result[$y]) ) {
            $values = array_values(get_object_vars($this->last_result[$y]));
        }

        // If there is a value return it else return null
        return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null;
    }

    /**
     * Get one row from the database
     * @param string $query
     * @param string $output ARRAY_A | ARRAY_N | OBJECT
     * @param int $y row num to return
     * @return mixed results
     */
    function get_row($query = null, $output = OBJECT, $y = 0) {
        $this->func_call = "\$db->get_row(\"$query\",$output,$y)";
        if ( $query )
            $this->query($query);
        else
            return null;

        if ( !isset($this->last_result[$y]) )
            return null;

        if ( $output == OBJECT ) {
            return $this->last_result[$y] ? $this->last_result[$y] : null;
        } elseif ( $output == ARRAY_A ) {
            return $this->last_result[$y] ? get_object_vars($this->last_result[$y]) : null;
        } elseif ( $output == ARRAY_N ) {
            return $this->last_result[$y] ? array_values(get_object_vars($this->last_result[$y])) : null;
        } else {
            $this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
        }
    }

    /**
     * Gets one column from the database
     * @param string $query (can be null as well, for caching, see codex)
     * @param int $x col num to return
     * @return array results
     */
    function get_col($query = null , $x = 0) {
        if ( $query )
            $this->query($query);

        $new_array = array();
        // Extract the column values
        for ( $i=0; $i < count($this->last_result); $i++ ) {
            $new_array[$i] = $this->get_var(null, $x, $i);
        }
        return $new_array;
    }

    /**
     * Return an entire result set from the database
     * @param string $query (can also be null to pull from the cache)
     * @param string $output ARRAY_A | ARRAY_N | OBJECT
     * @return mixed results
     */
    function get_results($query = null, $output = OBJECT) {
        $this->func_call = "\$db->get_results(\"$query\", $output)";

        if ( $query )
            $this->query($query);
        else
            return null;

        // Send back array of objects. Each row is an object
        if ( $output == OBJECT ) {
            return $this->last_result;
        } elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
            if ( $this->last_result ) {
                $i = 0;
                foreach( $this->last_result as $row ) {
                    $new_array[$i] = (array) $row;
                    if ( $output == ARRAY_N ) {
                        $new_array[$i] = array_values($new_array[$i]);
                    }
                    $i++;
                }
                return $new_array;
            } else {
                return null;
            }
        }
    }

    /**
     * Grabs column metadata from the last query
     * @param string $info_type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill
     * @param int $col_offset 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type
     * @return mixed results
     */
    function get_col_info($info_type = 'name', $col_offset = -1) {
        if ( $this->col_info ) {
            if ( $col_offset == -1 ) {
                $i = 0;
                foreach($this->col_info as $col ) {
                    $new_array[$i] = $col->{$info_type};
                    $i++;
                }
                return $new_array;
            } else {
                return $this->col_info[$col_offset]->{$info_type};
            }
        }
    }

    /**
     * Starts the timer, for debugging purposes
     */
    function timer_start() {
        $mtime = microtime();
        $mtime = explode(' ', $mtime);
        $this->time_start = $mtime[1] + $mtime[0];
        return true;
    }

    /**
     * Stops the debugging timer
     * @return int total time spent on the query, in milliseconds
     */
    function timer_stop() {
        $mtime = microtime();
        $mtime = explode(' ', $mtime);
        $time_end = $mtime[1] + $mtime[0];
        $time_total = $time_end - $this->time_start;
        return $time_total;
    }

    /**
     * Wraps fatal errors in a nice header and footer and dies.
     * @param string $message
     */
    function bail($message) { // Just wraps errors in a nice header and footer
        if ( !$this->show_errors ) {
            if ( class_exists('WP_Error') )
                $this->error = new WP_Error('500', $message);
            else
                $this->error = $message;
            return false;
        }
        wp_die($message);
    }
}

if ( !isset($aldb) )
    $aldb = new aldb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);

?>
